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Android项目实战_手机安全卫士进程管理

###1.设备进程信息获取
获取设备运行进程

ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> runningAppProcessInfos = am.getRunningAppProcesses();

获取设备RAM

MemoryInfo outInfo = new ActivityManager.MemoryInfo();
am.getMemoryInfo(outInfo);
outInfo.availMem;//设备可用RAM
outInfo.totalMem;//设备总RAM

###2.获取进程占用RAM
ActivityManager am = (ActivityManager) context
.getSystemService(Context.ACTIVITY_SERVICE);
MemoryInfo[] processMemoryInfo = am.getProcessMemoryInfo(new int[]{info.pid});
long memSize = processMemoryInfo[0].getTotalPrivateDirty()*1024;

###3.ListView中Item中有CheckBox、Button等的焦点处理
ListView的item布局中有CheckBox、Button等会获取焦点的控件会抢走焦点，造成ListView的item点击事件相应不了

解决方法：控件设置

android:clickable="false"
android:focusable="false"

或者

android:focusable="false"
//descendant 后裔; 后代; （由过去类似物发展来的）派生物; 弟子;
android:descendantFocusability="blocksDescendants"

###10.ListView中getItemAtPosition()的使用
ListView的getItemAtPosition()方法的返回值即为adapter中getItem()方法返回的对象

###4.清理进程
1.添加权限
<uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES" />
2.具体实现
ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
am.killBackgroundProcesses(String pkgName);

  1 package com.hb.mobilesafe.activities;
  2 
  3 import java.util.ArrayList;
  4 import java.util.Iterator;
  5 import java.util.List;
  6 
  7 import android.annotation.SuppressLint;
  8 import android.app.Activity;
  9 import android.app.ActivityManager;
 10 import android.app.ActivityManager.MemoryInfo;
 11 import android.graphics.Color;
 12 import android.os.Bundle;
 13 import android.text.format.Formatter;
 14 import android.view.View;
 15 import android.view.View.OnClickListener;
 16 import android.view.ViewGroup;
 17 import android.view.Window;
 18 import android.widget.AbsListView;
 19 import android.widget.AbsListView.OnScrollListener;
 20 import android.widget.AdapterView;
 21 import android.widget.AdapterView.OnItemClickListener;
 22 import android.widget.BaseAdapter;
 23 import android.widget.CheckBox;
 24 import android.widget.ImageView;
 25 import android.widget.ListView;
 26 import android.widget.RelativeLayout;
 27 import android.widget.TextView;
 28 
 29 import com.hb.demo_mobilesafe.R;
 30 import com.hb.mobilesafe.bean.ProInfo;
 31 import com.hb.mobilesafe.utils.ProgressInfoUtil;
 32 
 33 public class ProcessManagerActivity extends Activity implements OnClickListener {
 34     private TextView tv_clean,tv_allselect,tv_inverse;
 35     private ListView lv_progress_show;
 36     private TextView tv_progres_ssoft,tv_storage;
 37     private TextView tv_software_count;
 38     private List<ProInfo> infosRun;
 39     private List<ProInfo> userInfo;
 40     private List<ProInfo> sysInfo;
 41     private MyProAdapter adapter;
 42     private ActivityManager am;
 43     @Override
 44     protected void onCreate(Bundle savedInstanceState) {
 45         super.onCreate(savedInstanceState);
 46         requestWindowFeature(Window.FEATURE_NO_TITLE);
 47         setContentView(R.layout.activity_processmanager);
 48         initView();
 49         initDate();
 50     }
 51 
 52 
 53     private void initView() {
 54         tv_clean=(TextView) findViewById(R.id.tv_clean);
 55         tv_allselect=(TextView) findViewById(R.id.tv_allselect);
 56         tv_inverse=(TextView) findViewById(R.id.tv_inverse);
 57 
 58         tv_progres_ssoft=(TextView) findViewById(R.id.tv_progres_ssoft);
 59         tv_storage=(TextView) findViewById(R.id.tv_storage);
 60         tv_software_count=(TextView) findViewById(R.id.tv_software_count);
 61 
 62         lv_progress_show=(ListView) findViewById(R.id.lv_progress_show);
 63 
 64         tv_clean.setOnClickListener(this);
 65         tv_allselect.setOnClickListener(this);
 66         tv_inverse.setOnClickListener(this);
 67     }
 68     private void initDate() {
 69 
 70         tv_progres_ssoft.setText("运行中的进程："+getRunpro()+"个");
 71         tv_storage.setText("可用内存/总内存："+Formatter.formatFileSize(this, getAvimen())
 72                 +"/"+Formatter.formatFileSize(this, getTotalMen()));
 73         adapter = new MyProAdapter();
 74         sysInfo = new ArrayList<ProInfo>();
 75         userInfo = new ArrayList<ProInfo>();
 76         new Thread(){
 77             public void run() {
 78                 infosRun = ProgressInfoUtil.getInfosRun(ProcessManagerActivity.this);
 79                 isSysUserApp();
 80                 runOnUiThread(new Runnable() {
 81                     public void run() {
 82                         lv_progress_show.setAdapter(adapter);
 83                     }
 84                 });
 85             };
 86         }.start();
 87         lv_progress_show.setOnScrollListener(new OnScrollListener() {
 88 
 89             @Override
 90             public void onScrollStateChanged(AbsListView view, int scrollState) {
 91 
 92             }
 93 
 94             @Override
 95             public void onScroll(AbsListView view, int firstVisibleItem,
 96                     int visibleItemCount, int totalItemCount) {
 97                 if(userInfo!=null && sysInfo !=null){
 98 
 99                     if(firstVisibleItem==0){
100                         tv_software_count.setVisibility(View.GONE);
101                     }else{
102 
103                         tv_software_count.setVisibility(View.VISIBLE);
104                     }
105                     if(firstVisibleItem <userInfo.size()){
106                         tv_software_count.setText("用户进程："+userInfo.size());
107                     }else{
108                         tv_software_count.setText("系统进程："+sysInfo.size());
109                     }
110                 }
111             }
112         });
113         lv_progress_show.setOnItemClickListener(new OnItemClickListener() {
114 
115             @Override
116             public void onItemClick(AdapterView<?> parent, View view,
117                     int position, long id) {
118                 if(position == 0 || position == userInfo.size()+1){
119                     return;
120                 }else if(position < userInfo.size()+1){
121 
122                     int newPosition=position -1;
123                     boolean isCheck = userInfo.get(newPosition).isCheck();
124                     if(isCheck){
125 
126                         userInfo.get(newPosition).setCheck(false);
127                     }else{
128 
129                         userInfo.get(newPosition).setCheck(true);
130                     }
131                 }else{
132                     int newPosition=position-userInfo.size()-2;
133                     boolean isCheck = sysInfo.get(newPosition).isCheck();
134                     if(isCheck){
135                         sysInfo.get(newPosition).setCheck(false);
136                     }else{
137 
138                         sysInfo.get(newPosition).setCheck(true);
139                     }
140                 }
141                 adapter.notifyDataSetChanged();
142             }
143         });
144     }
145 
146     /**
147      * 一键清理，全选，反选
148      */
149     @Override
150     public void onClick(View v) {
151         switch (v.getId()) {
152         case R.id.tv_clean:
153             am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
154             Iterator<ProInfo> userIterator = userInfo.iterator();
155             Iterator<ProInfo> sysIterator = sysInfo.iterator();
156             while (userIterator.hasNext()) {
157                 ProInfo next = userIterator.next();
158                 if(next.isCheck()){
159                     am.killBackgroundProcesses(next.getAppPackageName());
160                     userIterator.remove();
161                 }
162             }
163             while (sysIterator.hasNext()) {
164                 ProInfo next = sysIterator.next();
165                 if(next.isCheck()){
166                     am.killBackgroundProcesses(next.getAppPackageName());
167                     sysIterator.remove();
168                 }
169             }
170             adapter.notifyDataSetChanged();
171 
172             break;
173 
174         case R.id.tv_allselect:
175             for (ProInfo infos : infosRun) {
176                 if(!"com.hb.demo_mobilesafe".equals(infos.getAppPackageName())){
177                     infos.setCheck(true);
178                 }
179             }
180             adapter.notifyDataSetChanged();
181             break;
182 
183         case R.id.tv_inverse:
184 
185             for (ProInfo infos : infosRun) {
186                 if(infos.isCheck() && !("com.hb.demo_mobilesafe").equals(infos.getAppPackageName())){
187                     infos.setCheck(false);
188                 }else if(!infos.isCheck() && !("com.hb.demo_mobilesafe").equals(infos.getAppPackageName())){
189                     infos.setCheck(true);
190                 }
191 
192             }
193             adapter.notifyDataSetChanged();
194             break;
195         }
196     }
197     /**
198      * 运行中的进程
199      * @return
200      */
201     private  int getRunpro(){
202         ActivityManager am=(ActivityManager) getSystemService(ACTIVITY_SERVICE);
203         int size = am.getRunningAppProcesses().size();
204         return size;
205 
206     }
207     /**
208      * 可用内存
209      */
210     private  long getAvimen(){
211         ActivityManager am=(ActivityManager) getSystemService(ACTIVITY_SERVICE);
212         MemoryInfo outInfo = new MemoryInfo();
213         am.getMemoryInfo(outInfo);
214         return outInfo.availMem;
215 
216     }
217     /**
218      * 总内存
219      */
220     private  long getTotalMen(){
221         ActivityManager am=(ActivityManager) getSystemService(ACTIVITY_SERVICE);
222         MemoryInfo outInfo = new MemoryInfo();
223         am.getMemoryInfo(outInfo);
224         return outInfo.totalMem;
225 
226     }
227     /**
228      * 区分系统应用和用户应用
229      */
230     public void isSysUserApp(){
231 
232         for (ProInfo proInfo: infosRun) {
233             boolean sys = proInfo.isSys();
234             if(sys){
235                 sysInfo.add(proInfo);
236             }else{
237                 userInfo.add(proInfo);
238 
239             }
240         }
241     }
242     class MyProAdapter extends BaseAdapter{
243         @SuppressWarnings("null")
244         @SuppressLint("ViewHolder") @Override
245         public View getView(int position, View view, ViewGroup parent) {
246             ViewHolder holder = null;
247             if(view != null && view instanceof RelativeLayout){
248                 holder=(ViewHolder) view.getTag();
249             }else{
250                 holder=new ViewHolder();
251                 view = View.inflate(ProcessManagerActivity.this, R.layout.proinfo_item, null);
252                 holder.iv_appIcon=(ImageView) view.findViewById(R.id.iv_pro_icon);
253                 holder.tv_appName=(TextView) view.findViewById(R.id.tv_pro_name);
254                 holder.tv_proSize=(TextView) view.findViewById(R.id.tv_pro_size);
255                 holder.cb_isCheck=(CheckBox) view.findViewById(R.id.cb_ischeak);
256                 view.setTag(holder);
257             }
258             if(position == 0){
259                 TextView tv0= new TextView(ProcessManagerActivity.this);
260                 if(userInfo.size()==0){
261                     tv0.setHeight(0);
262                     return tv0;
263                 }
264                 tv0.setClickable(false);
265                 tv0.setTextColor(Color.WHITE);
266                 tv0.setBackgroundColor(Color.GRAY);
267                 tv0.setText("用户进程："+userInfo.size());
268                 return tv0;
269             }else if(position ==userInfo.size()+1){
270                 TextView tv1= new TextView(ProcessManagerActivity.this);
271                 tv1.setClickable(false);
272                 tv1.setTextColor(Color.WHITE);
273                 tv1.setBackgroundColor(Color.GRAY);
274                 tv1.setText("系统进程："+sysInfo.size());
275                 return tv1;
276             }else if(position <userInfo.size()+1){
277                 int newPosition = position-1;
278                 ProInfo proInfo = userInfo.get(newPosition);
279                 holder.iv_appIcon.setImageDrawable(proInfo.getAppIcon());
280                 holder.tv_appName.setText(proInfo.getAppName());
281                 holder.tv_proSize.setText("进程大小："+Formatter.formatFileSize(ProcessManagerActivity.this, proInfo.getProSize()));
282                 holder.cb_isCheck.setChecked(proInfo.isCheck());
283                 String appPackageName = proInfo.getAppPackageName();
284                 if(appPackageName.equals(getPackageName())){
285                     holder.cb_isCheck.setVisibility(View.GONE);
286                 }else {
287                     holder.cb_isCheck.setVisibility(View.VISIBLE);
288                 }
289 
290             }else{
291                 int newPosition = position-userInfo.size()-2;
292                 ProInfo proInfo = sysInfo.get(newPosition);
293                 holder.iv_appIcon.setImageDrawable(proInfo.getAppIcon());
294                 holder.tv_appName.setText(proInfo.getAppName());
295                 holder.tv_proSize.setText("进程大小："+Formatter.formatFileSize(ProcessManagerActivity.this, proInfo.getProSize()));
296                 holder.cb_isCheck.setChecked(proInfo.isCheck());
297             }
298             return view;
299         }
300         @Override
301         public int getCount() {
302             return userInfo.size()+1+sysInfo.size()+1;
303         }
304 
305         @Override
306         public Object getItem(int position) {
307             return null;
308         }
309 
310         @Override
311         public long getItemId(int position) {
312             return 0;
313         }
314     }
315     class ViewHolder{
316         ImageView iv_appIcon;
317         CheckBox cb_isCheck;
318         TextView tv_appName;
319         TextView tv_proSize;
320     }
321 }

xml:

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:gravity="center_horizontal" >
 6 
 7     <TextView
 8         android:id="@+id/tv_title"
 9         android:layout_width="match_parent"
10         android:layout_height="46dp"
11         android:background="#A1FF80"
12         android:gravity="center_vertical"
13         android:text="进程管理"
14         android:textSize="20sp" />
15 
16     <RelativeLayout
17         android:id="@+id/rl_size"
18         android:layout_width="match_parent"
19         android:layout_height="wrap_content"
20         android:layout_below="@id/tv_title" >
21 
22         <TextView
23             android:id="@+id/tv_progres_ssoft"
24             android:layout_width="wrap_content"
25             android:layout_height="wrap_content"
26             android:text="运行中的进程：19个"
27             android:textSize="10sp" />
28 
29         <TextView
30             android:id="@+id/tv_storage"
31             android:layout_width="wrap_content"
32             android:layout_height="wrap_content"
33             android:layout_alignParentRight="true"
34             android:text="可用内存/总内存：20MB/60MB"
35             android:textSize="10sp" />
36     </RelativeLayout>
37 
38     <TextView
39         android:id="@+id/tv_software_count"
40         android:layout_width="match_parent"
41         android:layout_height="wrap_content"
42         android:layout_below="@id/rl_size"
43         android:background="#888888"
44         android:visibility="gone"
45         android:text="用户进程：5"
46         android:textColor="#ffffff"
47         />
48 
49     <ListView
50         android:clickable="true"
51         android:id="@+id/lv_progress_show"
52         android:layout_width="match_parent"
53         android:layout_height="wrap_content"
54         android:layout_above="@+id/ll"
55         android:layout_below="@id/tv_software_count" />
56 
57     <LinearLayout
58         android:id="@+id/ll"
59         android:layout_width="match_parent"
60         android:layout_height="wrap_content"
61         android:layout_alignParentBottom="true"
62         android:orientation="horizontal"
63         android:padding="2dip" >
64 
65         <TextView
66             android:id="@+id/tv_clean"
67             android:layout_width="0dp"
68             android:layout_height="wrap_content"
69             android:layout_weight="2"
70             android:background="@drawable/clean_button_selector"
71             android:textSize="15sp" />
72 
73         <TextView
74             android:id="@+id/tv_allselect"
75             android:layout_width="0dp"
76             android:layout_height="wrap_content"
77             android:layout_weight="1"
78             android:background="@drawable/select_btn_selector"
79             android:textSize="15sp" />
80 
81         <TextView
82             android:id="@+id/tv_inverse"
83             android:layout_width="0dp"
84             android:layout_height="wrap_content"
85             android:layout_weight="1"
86             android:background="@drawable/inverse_btn_selector"
87             android:textSize="15sp" />
88     </LinearLayout>
89 
90 </RelativeLayout>

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原文地址：https://www.cnblogs.com/boket/p/6991795.html